In Chile, strong aftershocks have hit areas devastated by last week's earthquake in central Chile triggering brief panic. The tremors of magnitude 5.5 and higher were felt in several cities including Santiago. They prompted tsunami warnings but these were later lifted. Nearly 800 people are known to have died in last Saturday's 8.8 magnitude quake and the tsunami it generated. Meanwhile, President Michelle Bachelet denied reports that there were shortages of food and fuel in the quake-hit areas. Aid is being distributed in Concepcion and other badly-damaged towns where the army had to quell outbreaks of looting. The 14,000 troops President Bachelet had sent to the earthquake zone restored order in Concepcion, Chile's second-largest city after an 18-hour curfew was put in place to prevent looting that broke out. A special air route has been set up to deliver aid from the capital, Santiago to Concepcion, 430 kilometers to the south. International aid from Chile's neighbours has also been arriving. Rescue crews with sniffer dogs have stepped up the search for survivors and in Concepcion, heavy equipment is being used to help move the heaps of rubble.